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  • Title: Olfactory-visual associative learning in monkeys depends on intrahemispheric olfactory-visual interaction.
    Author: Parker A, Gaffan D.
    Journal: Behav Neurosci; 1995 Dec; 109(6):1045-51. PubMed ID: 8748955.
    Abstract:
    Three Cynomolgus monkeys (Macaca fasicularis) learned a series of food-visual conditional discrimination problems. In each problem, 1 of 2 possible food items was presented at the beginning of each trial and acted as an instruction cue as to which of 2 visually distinct stimulus objects the monkey must displace on that trial to obtain a further food reward. Following surgical disconnection of olfactory-visual intrahemispheric interaction, the monkeys were unable to use olfactory properties of the food items to guide visual choices. These results show both that olfactory differences between foodstuffs are a powerful olfactory stimulus, which can enter into cross-modal association with visual stimuli, and that this association depends on an intrahemispheric pathway of olfactory-visual interaction.
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